JPH06197418A - Gas-insulated switchgear - Google Patents

Abstract

(57) [Summary] [Purpose] The fixing work can be done only from the front,
To obtain a gas insulated switchgear with improved workability. [Structure] In order to support and fix the floor surface of the main body of the gas insulated switchgear, the shaft is passed through the protruding portion 3a of the channel base 3 from the front side and tightened by the shaft fixing boss 5b. Next, the gas-insulated switchgear body is fixed via the board fixing boss 6a of the channel base 3.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a gas insulated switchgear.

[0002]

2. Description of the Related Art A front view of a conventional switchgear is shown in FIG. 7, a side view is shown in FIG. 8, a floor view taken along the line CC of FIG. 8 is shown in FIG. 9, and a channel base is shown in FIG. Explain.

A conventional front-rear maintenance type gas-insulated switchgear (hereinafter referred to as C-GIS) has a structure in which a gas chamber 202 is provided at the center of a metal box 201, and an air portion 203 is provided at the front and rear.
The disconnector 204 is on the top and bottom of the front, and the vacuum circuit breaker (hereinafter VC
(Referred to as B) and a VCB unit for pulling out, and a control line lead-in terminal block 206 is attached to the inner surface below, and the control line is led in from the floor and connected. A cable head 207 is attached to the back side, and the power cable is pulled in from the floor. The T-branch 208 is for busbar connection for each set of multiple boards.

As a result, the floor plan of the main body taken along the line C-C in FIG.
Use the work space 203 to secure the floor surface 11 of the floor 11 to the channel base 12 of FIG.
The bolts are tightened from the front and back surfaces by the fixing boss 13a of the channel base 12 and the fixing 13 to fix the channel base 12.

[0005]

The conventional front-rear surface maintenance type C-GIS, which has been in the age of high growth, is now at the time of replacement. At this time, there is an increasing demand for front maintenance type C-GIS that can utilize the empty space of the existing equipment in order to shorten the construction period at the time of replacement and has only one maintenance aspect, which is excellent in operability and workability. .

In the case of such a front maintenance type C-GIS, since the rear side is generally installed along the wall, the front and rear channel bases are arranged like the front and rear maintenance type C-GIS. In contrast to what was fixed to 12, the front maintenance makes it difficult to secure the work space 203 on the rear side, which makes fixing difficult. An object of the present invention is to provide a gas-insulated switchgear that can be fixed only on the front surface.

[0007]

In order to achieve the above object, the present invention provides a gas-insulated switchgear in which a box having an airtight structure is fixed to the upper surface of a support base and is supported by a support fixing member from the front side. Since the box body is supported and fixed to the base and the support fixing member is fixed to the box body, the fixing work can be performed only on the front surface.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of a gas insulated switchgear of the present invention, FIG. 2 is a right side view, and FIG. 3 is a left side view. In these drawings, the front maintenance type C-GIS as in this embodiment is shown.
In the case of the metal box 101, the gas chamber 102 is at the rear and the air is at the front.
It has a structure of 103. A disconnector 104 is provided above and below the right side of the aerial part 103, a VCB in the middle, and a VCB for pulling out
Mount the unit and connect the control line terminal block 10
6 is attached and the control line is connected from the floor.

Further, in the gas chamber 102, the circuit is swung to the left side by the horizontal bus bar 107, the cable head 108 is attached to the front surface on the left side, and the power cable is pulled in from the floor surface. T-branch 109
Is for busbar communication by each set of multiple boards. Further, FIG. 4 is a view (floor view) taken along the line BB of FIG. 2, FIG. 5 is a view showing a channel base, and FIG. 6 is a view showing a shaft. A square hole 2 is opened in the floor plate 1 of the C-GIS main body 101 and installed on the channel base 3.

Next, the shaft 4 is penetrated from the front surface to the inner side with respect to the projection 3a for penetrating the shaft passing through the square hole 2. The shaft 4 is fixed by passing through the through hole 5 of the shaft 4 passed through the through hole 5a of the floor plate 1 and tightening with the shaft fixing boss 5b of the channel base 3.

Finally, the board is fixed by bolts through the through holes 6 of the floor plate 1 and the board fixing boss 6a of the channel base 3. In this way, the shaft 4 fixed on the front surface also acts on the rear surface, so that the C-GIS main body 101 and the channel base 3 are completely fixed. In addition, since the work can be done only from the front side, the C-GIS does not move against external vibrations, which not only ensures the safety of the fixing work but also the C-GIS.
The operability and safety of the main body 101 are also improved. On the other hand, as another embodiment, a screw is cut on the tip of the shaft 4, and a protrusion on the back side is also screwed to fix the shaft 4 back and forth.

Further, the shaft 4 is fixed in the board,
Channel base 3 with some keys attached
After installing it on the channel base 3
It may be fixed by hooking it on.

[0014]

As described above, according to the present invention, in a gas-insulated switchgear in which a box body having an airtight structure is fixed to the upper surface of a support base, the box body is supported and fixed to the support base by a support fixing member from the front side. In addition, since the supporting and fixing member is fixed to the box body, the fixing work can be performed only from the front surface, and the workability can be improved.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a gas insulated switchgear of the present invention.

FIG. 2 is a schematic diagram of a gas insulated switchgear of the present invention.

FIG. 3 is a schematic diagram of a gas insulated switchgear of the present invention.

FIG. 4 is a view on arrow BB of FIG. 2;

FIG. 5 is a view showing a channel base of the gas insulated switchgear of the present invention.

FIG. 6 is a diagram showing a shaft of the gas insulated switchgear of the present invention.

FIG. 7 is a schematic view of a conventional gas insulated switchgear.

FIG. 8 is a schematic view of a conventional gas insulated switchgear.

FIG. 9 is a view on arrow CC of FIG.

FIG. 10 is a view showing a channel base of a conventional gas insulated switchgear.

[Explanation of symbols]

1 ... Floor board, 3 ... Channel base, 3a ... Projection part, 4 ...
shaft.

Claims (1)

[Claims] 1. In a gas-insulated switchgear in which a box having an airtight structure is fixed to an upper surface of a support base, the box body is supported and fixed to the support base by a support fixing member from the front side, and the support fixing member is fixed to the support fixing member. A gas-insulated switchgear characterized by being fixed to a box.